Earlier four people, including three models, were arrested following a tip-off.
Detectives are looking for three former members of the armed forces who are allegedly involved in the killing of police Special Branch (SB) Inspector, Md Mamun Imran Khan.
Dhaka Metropolitan Police Joint Commissioner of Detective Branch (DB), Abdul Baten, said at a press conference at the DMP Media Centre on Thursday: “The three accused are: Swapan, 40, Didar, 40, and Atik, 30.”
Earlier four people, including three models, were arrested following a tip-off. DB police conducted drives in different areas of Dhaka and made the arrests.
The models are Suraiya Akhter Keya, 22, Meherunnesa Swarna, alias Afrin, 19, and Faria Binte Mim, alias Maisha, 18. However, the identity of the fourth arrested, is yet to be ascertained.
Speaking to reporters, Commissioner Abdul Baten said: “We have heard from the arrested that the three persons have served in the army and were sacked from the force.”
The commissioner added: “The arrested were interrogated separately and according to them, no lethal weapons or fire arms were used in killing Mamun. The three persons beat him indiscriminately,causing Mamun to lose consciousness and he gradually died.”
Joint Commissioner Abdul Baten also pointed out that murder victim Mamun, and his friend Rahmatullah, 35, acted in various TV serials based on crime incidents from time to time and they also shared the screen with arrested Meherunnesa Swarna a few years ago.
“Rahmatullah and Inspector Mamun, went to Meherunnesa’s birthday party in Banani on Sunday night. The perpetrators, Swapan, Didar, Atik, Mizan, and Rabiul, were already at the flat and started blackmailing Rahmatullah after forcing him into intimate pictures with Meherennessa,” said Joint Commissioner Abdul Baten.
“Sensing the situation,Inspector Mamun showed his police ID card and the five started beating Mamun, holding his friend Rahmatullah captive in the flat.
“At one stage, Mamun died from the beating he got. Later, the killers forced Rahmatullah to help them hide the body, threatening to kill him otherwise,” said Commissioner Abdul Baten.
Describing the incident of how the killers took the body to Gazipur and burnt it, so no one could identify Mamun’s body, the DB commissioner said: “Rahmatullah said he was compelled to assist them in this misdeed to save his life. Rahmatullah told us he even gave Tk1, 000,000 to the killers after destroying the dead body.”
“The DB men nabbed Rahmatullah soon after he came back to his home and recovered the burnt body from Gazipur district's Kaliganj upazila based on his confession,” added Commissioner Abdul Baten.
Several DB officials seeking anonymity said the sacked army members of Sergeant rank were involved with a syndicate who blackmailed people for money.
With the recent arrest made, a total of five people have been arrested so far in connection with the murder of the 38 year old SB inspector, whose burnt body was recovered from Gazipur on July 10.
SB officer Mamun joined the Bangladesh Police as a sub-inspector in 2005 and was posted to several Dhaka based police units. In 2015, he was promoted to inspector and posted to Chittagong.